I am surprised and saddened to learn that no one on this board knew about this little trick.
I learned many years ago to put a bank plug into live phone jacks when I unplug a phone so that dial tone does not run out on the floor.
AT&T systems Dial Tone is especially sticky and corrosive,
Luckily Panasonic systems have a Dial Tone pressure reliever built in.
And I thought we were all Pro's here!
PS
Of course, we all know that 1A2 dial tone was sweet, with the aroma and taste of honeysuckle.
Those were the days my friend.
